Hummer H2. Manual - part 1778

Fig. 300: Removing Engine Coolant Air Bleed Pipe, Bolt & Gasket 
Courtesy of GENERAL MOTORS CORP. 

1. Remove the engine coolant air bleed pipe bolts (309).  

2. Remove the pipe (307) with hose and gaskets (308). 

 

2004 Hummer H2 

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

  

Fig. 301: Engine Coolant Air Bleed Cover, Gasket & Bolts 
Courtesy of GENERAL MOTORS CORP. 

3. Remove the engine coolant air bleed cover bolts (312), covers (313), and gaskets (308). 

 

2004 Hummer H2 

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

  

Fig. 302: View Of Pipe & Cover Gasket 
Courtesy of GENERAL MOTORS CORP. 

4. Remove the gaskets from the pipe and covers.  

5. Discard the gaskets. 

 

2004 Hummer H2 

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

  

Fig. 303: Air Bleed Pipe, Hose & Clamp 
Courtesy of GENERAL MOTORS CORP. 

6. Remove the hose (311) and clamps (310) from the pipe (307).  

ENGINE VALLEY COVER REMOVAL 

 

2004 Hummer H2 

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2